Improvement in folding-guides for sewing-machines



3. C. BOYES.

Sewing Machine Hemmer.

Patent ed July 22. 1856.

N4 PETERS Photn-Lllhogmpher, Wnhinglon, D. c.

UNITED STATES BURRITT O. BOYES, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR,TO B.

PATENT OFFICE. A

O. BOYES AND H. DEROUM, OF SAME PLACE.

*IMPROVEMENT IN FOLDING-GUIDES F-OR SEWING-MACHINES,

Specification forming part of Letters Patent No. 15,402, dated July :22,1856.

To all whom it may concern.-

Be it known that I, BURRIT'I 0. Bones, of the city of Philadelphia, andState of Pennsylvania, have invented anew and Improved Hemming, Folding,and Oording Apparatus to be Attached/ to Sewing-Machines; and I dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, and to the letters of reference marked to make and use myinvention, I will now proceed to describe its construction andoperation.

On reference to the drawings which form a part of this specification,Figure Iis an iso metrical perspective view (drawn to a scale of doublethe real size) of my improved folding, hemming, and cording apparatus;Fig. 2, the same as Fig. 1 with the cloth introduced, in order to showthe action of the slit rings on the same.

A is a metal plate such as is generally attached to all sewing-machinesfor receiving the fabric to be operated upon. a is an orifice in thesaid plate, through which the needle penetrates in the usual manner.

To the plate A, I secure by means of screws or any other convenientattachment another metal plate, B, of the form shown in Fig. 1. To thisplate I attach the helical rings 0 and D, generally termed slit rings.Onto the same plate, B, I attach a guard, b Z2, so arranged that theportion 6 of the said guard shall be a sufficient distance from theplate A to allow the folded fabric to pass easily, and also a sufficientdistance from the orifice a for the penetration of the needle, in orderto allow the latter to operate freely.

Should it be desirable to turn on the edge 1 of fabrics a single fold orhem, I make use of one ring only, in which case the edge of the fabricis introduced between the upper and a single fold. The other end, as, ofthe wire guides the said fold, which passes in its further progressunder the end I) of the guard, so as to be acted upon bythe needle andthread of the machine.

Should it be desirable to turn a double hem on the fabric I make use oftwo helical rings, as seen in the drawings, one ring being a shortdistance in advance of the other. The action of these rings and theirtendency to turn over a double hem will be readily understood onreference to Fig. 2.

It will be readily perceived that plaits or folds can be formed in themiddle as well as on the edge of fabrics by the employment of a similararrangement of helical or slit rings, the extent of such folds or plaitsbeing determined by the size and arrangement of the rings. By placing acord, 2:, between'the upper and lower wires which form the helical ringsprevious to the introduction of the edge of the fabric, the said cordwill become folded within the hem, as seen in red lines, Fig. 2.

I do not wish to confine myself to the precise shape of the metal plateB, as shown in the drawings, to the precise arrangement of the guard b bin respect to the plate, or to-the number of helical or slit ringsshown. Nor do I desire to claim a device for which a patent was grantedto Seth P. Ohapin, and in which hems are formed on the edges of flexiblematerials by means of folding-guides made to turn the edge one hundredand eighty degrees or more; but

What I claim, and desire to secure by Letters Patent, isa The employmentof one or more helical or slit rings for the purpose of forming on theedges of fabrics single or double-hems, or for forming plaits in themiddle of fabrics previous to the said hems or plaits being submitted tothe action of the needle and thread of sewing-machines.

, BURRITT C. BOYES.

Witnesses:

HENRY HOWSON, WILLIAM E. WALTON.

